import java.io.*;

public class TestDNALookUp {
    public static void main( String[] args ) throws IOException {
        TwoWayLookUp tw = TwoWayLookUp.getInstance();
        if( args.length == 1 ) {
            if( args[0].length() < 1 || args[0].length() > 3 )
                System.exit(9);
            String[] result = tw.getDNAFromAminoAcid( args[0] );
            if( result == null ) {
                System.out.println("That didn't correspond to a "
                    + "valid amino acid (3-ltr abbreviation)." );
                return;
            }
            for( int i=0; i<result.length; i++ )
                System.out.println( args[0] + " is encoded as " 
                            + result[i] );
        }
        if( args.length == 0 ) {
            BufferedReader ins = new BufferedReader(
                    new InputStreamReader( System.in ) );
            PrintWriter outs = new PrintWriter( new BufferedWriter(
                    new OutputStreamWriter( System.out ) ), true );
            String input;
            while( true ) {
                outs.print( "Enter an amino acid (3-ltr abbreviation): " );
                outs.flush();
                input = ins.readLine();
                if( input.length() == 0 )
                    return;
                String[] result = tw.getDNAFromAminoAcid( input );
                if( result == null ) {
                    System.out.println("That didn't correspond to a "
                        + "valid amino acid (3-ltr abbreviation)." );
                    continue;
                }

                for( int i=0; i<result.length; i++ )
                    outs.println( input + " is encoded as " 
                                + result[i] );
            }
        }
    }
}